17.09
thu
thu
Day
72°F
N 9 mph
Precip.
11%
11%
Night
70°F
NE 14 mph
Precip.
24%
24%
18.09
fri
fri
Day
75°F
SE 11 mph
Precip.
8%
8%
Night
61°F
S 16 mph
Precip.
7%
7%
19.09
sat
sat
Day
61°F
W 9 mph
Precip.
12%
12%
Night
63°F
NW 12 mph
Precip.
15%
15%
20.09
sun
sun
Day
68°F
N 21 mph
Precip.
36%
36%
Night
57°F
S 17 mph
Precip.
29%
29%
21.09
mon
mon
Day
63°F
SW 13 mph
Precip.
13%
13%
Night
59°F
W 14 mph
Precip.
18%
18%
22.09
tue
tue
Day
61°F
W 20 mph
Precip.
27%
27%
Night
59°F
W 24 mph
Precip.
56%
56%
23.09
wed
wed
Day
63°F
W 25 mph
Precip.
70%
70%
Night
66°F
W 17 mph
Precip.
49%
49%
sea water
temperature
temperature
| Stonington |
monthly
weather
weather
| Stonington |
current
weather
weather
| Stonington |
14 days
forecast
forecast
| Stonington |
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 69.0°F. The highest and lowest sea temperatures during the month were 70.3°F and 67.8°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 64.5°F. The highest and lowest sea temperatures during the month were 68.7°F and 60.3°F.
Air temperature in Stonington, °F
Precipitation total in Stonington, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Stonington
Stonington on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Stonington
Local time: 05:43
September 17, thursday
0600
68°F
NE
5 mph
5 mph
0900
70°F
NE
4 mph
4 mph
1200
72°F
N
9 mph
9 mph
1500
73°F
N
13 mph
13 mph
1800
72°F
NE
13 mph
13 mph
2100
70°F
NE
14 mph
14 mph
September 18, friday
0000
70°F
NE
14 mph
14 mph
0300
70°F
NE
14 mph
14 mph
